bind.cpp in back-ndb in OpenLDAP 2.4.x before 2.4.24 does not require authentication for the root Distinguished Name (DN), which allows remote attackers to bypass intended access restrictions via an arbitrary password.
https://bugzilla.redhat.com/show_bug.cgi?id=680472
http://www.vupen.com/english/advisories/2011/0665
http://www.ubuntu.com/usn/USN-1100-1
http://www.redhat.com/support/errata/RHSA-2011-0347.html
http://www.openldap.org/lists/openldap-announce/201102/msg00000.html
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6661
http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ndb/bind.cpp.diff?r1=1.5&r2=1.8
http://www.mandriva.com/security/advisories?name=MDVSA-2011:056
http://securitytracker.com/id?1025190
http://security.gentoo.org/glsa/glsa-201406-36.xml
http://secunia.com/advisories/43718
http://secunia.com/advisories/43331
http://openwall.com/lists/oss-security/2011/02/25/13
http://openwall.com/lists/oss-security/2011/02/24/12
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705